Speaker, Swearing in Timing (selection as well)
Speaker of the United States House of Representatives
Selection process (see selection) (1st day of new Session [Congress 112th, 113th, 114th etc...]
http://en.wikipedia.org/wiki/Speaker_of_the_United_States_House_of_Representatives
Swearing for the 113th Congress / January 3rd, 2013
http://www.usnews.com/photos/house-speaker-boehner-swears-in-113th-congress
Rep. John Boehner Sworn In As New Speaker Of The House
by Matt Schneider | 2:29 pm, January 5th, 2011
http://www.mediaite.com/tv/rep-john-boehner-sworn-in-as-new-speaker-of-the-house/
Presentation on the Issue of oaths in Congress. Does not pin down timing, but is interesting.
Oaths of Office For Federal Officials
Congress
http://uspolitics.about.com/od/usgovernment/a/oaths_of_office_4.htm